Modern industrial silks rarely have 100% silk products, mainly a combination of natural fibers, man-made fibers, and cellulose.
Man-made fibers refer to non-natural fibers made by physical and chemical methods, and are divided into two types: regenerated fibers and chemical fibers. Regenerated fiber is made of some natural polymer compounds or their derivatives as raw materials, which are dissolved into a textile solution, and then spun into a fibrous material; chemical fibers are made of petroleum, natural gas, coal and agricultural and sideline products as raw materials Made of synthetic fibers. Man-made fibers are added to silk mainly to make silk anti-shrinkage, moth-proof, and easier to preserve.
Man-made fibers have a history of only 100 years. Before that, humans have relied on natural fibers such as cotton, wool, silk, and linen to be used in textiles and clothing and other production fields. After the 1950s, various synthetic fibers came out successively, in large quantities and low prices, which greatly enriched the total output and scope of use of textile fibers and became competitors of natural fibers. The raw material of synthetic fiber is petroleum, but the earth’s petroleum resources will be exhausted after 30-50 years. With the continuous advancement of social economy and the change of consumer consciousness, in order to cope with the oil crisis and adapt to the global trend of environmental protection concepts, the fiber industry also Gradually move closer to the development and use of natural fibers. Various new types of fibers have come out, such as natural colored cotton, bamboo fiber, Lyocell fiber, PLA fiber, soybean protein fiber, silkworm pupa protein fiber, etc., all of which have the characteristics of natural fibers, which are not only excellent in performance but also environmentally friendly.
